Resetable electronic fuse replacement. Plugs into a fuse socket in place of the fuse. Ideal for short circuit troubleshooting. Adjustable fuse ratings are 5A, 7.5A, 10A, 15A, 20A, 25A and 30A. Microprocessor controlled. Fuse rating is adjustable with a push button switch. LED indicates fuse selection. Reset button. Three fuse adapters are included. Leads are 3 feet long.